BetaEddyOne: A long-lived 1.5 layer quasigeostrophic eddy on a beta plane, with Lagrangian particles

BetaEddyOne is a yearlong simulation of a large, nonlinear oceanic eddy under 1.5 layer quasigeostrophic dynamics on a beta plane, initially located at 24˚N. The simulation is run at 512 x 256 resolution and is seeded with Lagrangian particles with one particle per grid point. This simulation is indended for use as a common test case for eddy-related diagnostics and analysis methods. It approximately replicates the eddy analyzed in detail in Early, Samelson, and Chelton (2011), https://doi.org/10.1175/2011JPO4601.1. The simulation was created using the WaveVortexModel (Early, Lelong, and Sundermeyer, 2021, https://doi.org/10.1017/jfm.2020.995), the code for which is available on GitHub at https://github.com/Energy-Pathways-Group/GLOceanKit. This particular simulation was created for use in the paper Lilly, J. M., J. Feske, B. Fox-Kemper, and J. J. Early (2024). Integral theorems for the gradient of a vector field, with a fluid dynamical application. Proceedings of the Royal Society of London, Series A. 480 (2293): 20230550, 1–30. doi 10.1098/rspa.2023.0550. The figure shows a snapshot of the model's vertical vorticity.BetaEddyOne 是一项为期一年的数值模拟，针对β平面（beta plane）上1.5层准地转动力学（quasigeostrophic dynamics）框架下的大型非线性海洋涡旋开展，其初始位置位于北纬24°。该模拟采用512×256的分辨率进行计算，并布设拉格朗日粒子（Lagrangian particles），每个网格点对应一个粒子。 本模拟旨在作为涡旋相关诊断与分析方法的通用测试基准案例，近似复现了Early、Samelson与Chelton（2011）一文中详细解析的海洋涡旋，原文链接：https://doi.org/10.1175/2011JPO4601.1。本模拟通过WaveVortexModel（Early、Lelong与Sundermeyer，2021，https://doi.org/10.1017/jfm.2020.995）构建，其源代码可在GitHub平台的https://github.com/Energy-Pathways-Group/GLOceanKit获取。本项特定模拟专为以下论文开发： Lilly, J. M., J. Feske, B. Fox-Kemper, and J. J. Early (2024). Integral theorems for the gradient of a vector field, with a fluid dynamical application. Proceedings of the Royal Society of London, Series A. 480 (2293): 20230550, 1–30. doi: 10.1098/rspa.2023.0550. 本配图展示了该模型输出的垂直涡度（vertical vorticity）快照。